static void
AcpiTbConvertFadt (
void)
{
UINT8 Pm1RegisterLength;
ACPI_GENERIC_ADDRESS *Target;
ACPI_NATIVE_UINT i;
/* Update the local FADT table header length */
AcpiGbl_FADT.Header.Length = sizeof (ACPI_TABLE_FADT);
/* Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary */
if (!AcpiGbl_FADT.XFacs)
{
AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs;
}
if (!AcpiGbl_FADT.XDsdt)
{
AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt;
}
/*
* Expand the 32-bit V1.0 addresses to the 64-bit "X" generic address
* structures as necessary.
*/
for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++)
{
Target = ACPI_ADD_PTR (
ACPI_GENERIC_ADDRESS, &AcpiGbl_FADT, FadtInfoTable[i].Target);
/* Expand only if the X target is null */
if (!Target->Address)
{
AcpiTbInitGenericAddress (Target,
*ACPI_ADD_PTR (UINT8, &AcpiGbl_FADT, FadtInfoTable[i].Length),
(UINT64) *ACPI_ADD_PTR (UINT32, &AcpiGbl_FADT, FadtInfoTable[i].Source));
}
}
/*
* Calculate separate GAS structs for the PM1 Enable registers.
* These addresses do not appear (directly) in the FADT, so it is
* useful to calculate them once, here.
*
* The PM event blocks are split into two register blocks, first is the
* PM Status Register block, followed immediately by the PM Enable Register
* block. Each is of length (Pm1EventLength/2)
*/
Pm1RegisterLength = (UINT8) ACPI_DIV_2 (AcpiGbl_FADT.Pm1EventLength);
/* The PM1A register block is required */
AcpiTbInitGenericAddress (&AcpiGbl_XPm1aEnable, Pm1RegisterLength,
(AcpiGbl_FADT.XPm1aEventBlock.Address + Pm1RegisterLength));
/* The PM1B register block is optional, ignore if not present */
if (AcpiGbl_FADT.XPm1bEventBlock.Address)
{
AcpiTbInitGenericAddress (&AcpiGbl_XPm1bEnable, Pm1RegisterLength,
(AcpiGbl_FADT.XPm1bEventBlock.Address + Pm1RegisterLength));
}
}
static void __init acpi_tb_convert_fadt(void)
{
u8 pm1_register_length;
struct acpi_generic_address *target;
acpi_native_uint i;
/* Update the local FADT table header length */
acpi_gbl_FADT.header.length = sizeof(struct acpi_table_fadt);
/* Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary */
if (!acpi_gbl_FADT.Xfacs) {
acpi_gbl_FADT.Xfacs = (u64) acpi_gbl_FADT.facs;
}
if (!acpi_gbl_FADT.Xdsdt) {
acpi_gbl_FADT.Xdsdt = (u64) acpi_gbl_FADT.dsdt;
}
/*
* For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which
* should be zero are indeed zero. This will workaround BIOSs that
* inadvertently place values in these fields.
*
* The ACPI 1.0 reserved fields that will be zeroed are the bytes located at
* offset 45, 55, 95, and the word located at offset 109, 110.
*/
if (acpi_gbl_FADT.header.revision < 3) {
acpi_gbl_FADT.preferred_profile = 0;
acpi_gbl_FADT.pstate_control = 0;
acpi_gbl_FADT.cst_control = 0;
acpi_gbl_FADT.boot_flags = 0;
}
/*
* Expand the ACPI 1.0 32-bit V1.0 addresses to the ACPI 2.0 64-bit "X"
* generic address structures as necessary.
*/
for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
target =
ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT,
fadt_info_table[i].target);
/* Expand only if the X target is null */
if (!target->address) {
acpi_tb_init_generic_address(target,
*ACPI_ADD_PTR(u8,
&acpi_gbl_FADT,
fadt_info_table
[i].length),
(u64) * ACPI_ADD_PTR(u32,
&acpi_gbl_FADT,
fadt_info_table
[i].
source));
}
}
/*
* Calculate separate GAS structs for the PM1 Enable registers.
* These addresses do not appear (directly) in the FADT, so it is
* useful to calculate them once, here.
*
* The PM event blocks are split into two register blocks, first is the
* PM Status Register block, followed immediately by the PM Enable Register
* block. Each is of length (pm1_event_length/2)
*/
pm1_register_length = (u8) ACPI_DIV_2(acpi_gbl_FADT.pm1_event_length);
/* The PM1A register block is required */
acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable,
pm1_register_length,
(acpi_gbl_FADT.xpm1a_event_block.address +
pm1_register_length));
/* Don't forget to copy space_id of the GAS */
acpi_gbl_xpm1a_enable.space_id =
acpi_gbl_FADT.xpm1a_event_block.space_id;
/* The PM1B register block is optional, ignore if not present */
if (acpi_gbl_FADT.xpm1b_event_block.address) {
acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable,
pm1_register_length,
(acpi_gbl_FADT.xpm1b_event_block.
address + pm1_register_length));
/* Don't forget to copy space_id of the GAS */
acpi_gbl_xpm1b_enable.space_id =
acpi_gbl_FADT.xpm1a_event_block.space_id;
}
}
static void
AcpiTbConvertFadt1 (
FADT_DESCRIPTOR *LocalFadt,
FADT_DESCRIPTOR_REV1 *OriginalFadt)
{
/* ACPI 1.0 FACS */
/* The BIOS stored FADT should agree with Revision 1.0 */
/*
* Copy the table header and the common part of the tables.
*
* The 2.0 table is an extension of the 1.0 table, so the entire 1.0
* table can be copied first, then expand some fields to 64 bits.
*/
ACPI_MEMCPY (LocalFadt, OriginalFadt, sizeof (FADT_DESCRIPTOR_REV1));
/* Convert table pointers to 64-bit fields */
ACPI_STORE_ADDRESS (LocalFadt->XFirmwareCtrl, LocalFadt->V1_FirmwareCtrl);
ACPI_STORE_ADDRESS (LocalFadt->XDsdt, LocalFadt->V1_Dsdt);
/*
* System Interrupt Model isn't used in ACPI 2.0
* (LocalFadt->Reserved1 = 0;)
*/
/*
* This field is set by the OEM to convey the preferred power management
* profile to OSPM. It doesn't have any 1.0 equivalence. Since we don't
* know what kind of 32-bit system this is, we will use "unspecified".
*/
LocalFadt->Prefer_PM_Profile = PM_UNSPECIFIED;
/*
* Processor Performance State Control. This is the value OSPM writes to
* the SMI_CMD register to assume processor performance state control
* responsibility. There isn't any equivalence in 1.0, leave it zeroed.
*/
LocalFadt->PstateCnt = 0;
/*
* Support for the _CST object and C States change notification.
* This data item hasn't any 1.0 equivalence so leave it zero.
*/
LocalFadt->CstCnt = 0;
/*
* FADT Rev 2 was an interim FADT released between ACPI 1.0 and ACPI 2.0.
* It primarily adds the FADT reset mechanism.
*/
if ((OriginalFadt->Revision == 2) &&
(OriginalFadt->Length == sizeof (FADT_DESCRIPTOR_REV2_MINUS)))
{
/*
* Grab the entire generic address struct, plus the 1-byte reset value
* that immediately follows.
*/
ACPI_MEMCPY (&LocalFadt->ResetRegister,
&(ACPI_CAST_PTR (FADT_DESCRIPTOR_REV2_MINUS,
OriginalFadt))->ResetRegister,
sizeof (ACPI_GENERIC_ADDRESS) + 1);
}
else
{
/*
* Since there isn't any equivalence in 1.0 and since it is highly
* likely that a 1.0 system has legacy support.
*/
LocalFadt->IapcBootArch = BAF_LEGACY_DEVICES;
}
/*
* Convert the V1.0 block addresses to V2.0 GAS structures
*/
AcpiTbInitGenericAddress (&LocalFadt->XPm1aEvtBlk, LocalFadt->Pm1EvtLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1aEvtBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPm1bEvtBlk, LocalFadt->Pm1EvtLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1bEvtBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPm1aCntBlk, LocalFadt->Pm1CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1aCntBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPm1bCntBlk, LocalFadt->Pm1CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1bCntBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPm2CntBlk, LocalFadt->Pm2CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm2CntBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPmTmrBlk, LocalFadt->PmTmLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_PmTmrBlk);
AcpiTbInitGenericAddress (&LocalFadt->XGpe0Blk, 0,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Gpe0Blk);
AcpiTbInitGenericAddress (&LocalFadt->XGpe1Blk, 0,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Gpe1Blk);
/* Create separate GAS structs for the PM1 Enable registers */
AcpiTbInitGenericAddress (&AcpiGbl_XPm1aEnable,
(UINT8) ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen),
(ACPI_PHYSICAL_ADDRESS)
(ACPI_GET_ADDRESS (LocalFadt->XPm1aEvtBlk.Address) +
ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen)));
/* PM1B is optional; leave null if not present */
if (ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address))
{
AcpiTbInitGenericAddress (&AcpiGbl_XPm1bEnable,
(UINT8) ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen),
(ACPI_PHYSICAL_ADDRESS)
(ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address) +
ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen)));
}
}
static void
AcpiTbConvertFadt2 (
FADT_DESCRIPTOR *LocalFadt,
FADT_DESCRIPTOR *OriginalFadt)
{
/* We have an ACPI 2.0 FADT but we must copy it to our local buffer */
ACPI_MEMCPY (LocalFadt, OriginalFadt, sizeof (FADT_DESCRIPTOR));
/*
* "X" fields are optional extensions to the original V1.0 fields, so
* we must selectively expand V1.0 fields if the corresponding X field
* is zero.
*/
if (!(ACPI_GET_ADDRESS (LocalFadt->XFirmwareCtrl)))
{
ACPI_STORE_ADDRESS (LocalFadt->XFirmwareCtrl,
LocalFadt->V1_FirmwareCtrl);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XDsdt)))
{
ACPI_STORE_ADDRESS (LocalFadt->XDsdt, LocalFadt->V1_Dsdt);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1aEvtBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm1aEvtBlk,
LocalFadt->Pm1EvtLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1aEvtBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm1bEvtBlk,
LocalFadt->Pm1EvtLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1bEvtBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1aCntBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm1aCntBlk,
LocalFadt->Pm1CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1aCntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1bCntBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm1bCntBlk,
LocalFadt->Pm1CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1bCntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm2CntBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm2CntBlk,
LocalFadt->Pm2CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm2CntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPmTmrBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPmTmrBlk,
LocalFadt->PmTmLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_PmTmrBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XGpe0Blk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XGpe0Blk,
0, (ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Gpe0Blk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XGpe1Blk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XGpe1Blk,
0, (ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Gpe1Blk);
}
/* Create separate GAS structs for the PM1 Enable registers */
AcpiTbInitGenericAddress (&AcpiGbl_XPm1aEnable,
(UINT8) ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen),
(ACPI_PHYSICAL_ADDRESS)
(ACPI_GET_ADDRESS (LocalFadt->XPm1aEvtBlk.Address) +
ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen)));
AcpiGbl_XPm1aEnable.AddressSpaceId =
LocalFadt->XPm1aEvtBlk.AddressSpaceId;
/* PM1B is optional; leave null if not present */
if (ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address))
{
AcpiTbInitGenericAddress (&AcpiGbl_XPm1bEnable,
(UINT8) ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen),
(ACPI_PHYSICAL_ADDRESS)
(ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address) +
ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen)));
AcpiGbl_XPm1bEnable.AddressSpaceId =
LocalFadt->XPm1bEvtBlk.AddressSpaceId;
}
}
static void
AcpiTbConvertFadt (
void)
{
UINT8 Pm1RegisterLength;
ACPI_GENERIC_ADDRESS *Target;
ACPI_NATIVE_UINT i;
/* Update the local FADT table header length */
AcpiGbl_FADT.Header.Length = sizeof (ACPI_TABLE_FADT);
/* Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary */
if (!AcpiGbl_FADT.XFacs)
{
AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs;
}
if (!AcpiGbl_FADT.XDsdt)
{
AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt;
}
/*
* For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which
* should be zero are indeed zero. This will workaround BIOSs that
* inadvertently place values in these fields.
*
* The ACPI 1.0 reserved fields that will be zeroed are the bytes located at
* offset 45, 55, 95, and the word located at offset 109, 110.
*/
if (AcpiGbl_FADT.Header.Revision < 3)
{
AcpiGbl_FADT.PreferredProfile = 0;
AcpiGbl_FADT.PstateControl = 0;
AcpiGbl_FADT.CstControl = 0;
AcpiGbl_FADT.BootFlags = 0;
}
/*
* Expand the ACPI 1.0 32-bit V1.0 addresses to the ACPI 2.0 64-bit "X"
* generic address structures as necessary.
*/
for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++)
{
Target = ACPI_ADD_PTR (
ACPI_GENERIC_ADDRESS, &AcpiGbl_FADT, FadtInfoTable[i].Target);
/* Expand only if the X target is null */
if (!Target->Address)
{
AcpiTbInitGenericAddress (Target,
*ACPI_ADD_PTR (UINT8, &AcpiGbl_FADT, FadtInfoTable[i].Length),
(UINT64) *ACPI_ADD_PTR (UINT32, &AcpiGbl_FADT, FadtInfoTable[i].Source));
}
}
/*
* Calculate separate GAS structs for the PM1 Enable registers.
* These addresses do not appear (directly) in the FADT, so it is
* useful to calculate them once, here.
*
* The PM event blocks are split into two register blocks, first is the
* PM Status Register block, followed immediately by the PM Enable Register
* block. Each is of length (Pm1EventLength/2)
*/
Pm1RegisterLength = (UINT8) ACPI_DIV_2 (AcpiGbl_FADT.Pm1EventLength);
/* The PM1A register block is required */
AcpiTbInitGenericAddress (&AcpiGbl_XPm1aEnable, Pm1RegisterLength,
(AcpiGbl_FADT.XPm1aEventBlock.Address + Pm1RegisterLength));
/* The PM1B register block is optional, ignore if not present */
if (AcpiGbl_FADT.XPm1bEventBlock.Address)
{
AcpiTbInitGenericAddress (&AcpiGbl_XPm1bEnable, Pm1RegisterLength,
(AcpiGbl_FADT.XPm1bEventBlock.Address + Pm1RegisterLength));
}
}